Microsoft is investigating Windows activation issues that appear to be linked to the company’s recent move to block Windows 7 and Windows 8 keys from activating copies of Windows 10 and Windows 11. If you have an installation of Windows 10 / 11 that has been activated using the free upgrade from Windows 7 or 8, then there’s a chance it might become deactivated if you swap some hardware components or even upgrade your BIOS version.
I personally experienced this in late October on a copy of Windows 11 after swapping a motherboard in one of my test PCs and no longer being able to activate it using the digital key assigned to my Microsoft account. I had to purchase a new Windows 11 key instead.
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